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LA FEB 2013
1. Composites bears
a. Tensile stress
b. Shear Stress
c. Bearing Stress
2. Cap strip
a. Top & bottom of rib.
b. Diagonal member b/n upper & lower end.
3. The marking on the heads of the Dzus Fastener is identified by- Ans. Body dia, length, head type.
4. Mostly used in control system where deflection throudh structure is required-
Ans. Cable system.
5. Threaded rivets(rivnuts) are used to joint
a. Two or more sheet metals where shear stress is desired.
b. Attach parts or components with screw to sheet metals.
c. Two or more piece of sheet metal where bear stress is desired.
6. Non heat treatable alloy
Ans. 5056
7. 2014-T rivet
a. Primary Structure
b. Secondary
c. Generally not used in aircraft structure.
8. D in screw indicates
A. Head drilled for safetying
B. 2017 Al. Alloy
9. An A/C integral fuel tank is
a. A part of A/C structure
b. Removable part
10. Composite material
a. Low tensile strength
b. Low thermal expansion/ Cofficient
11. Fungicidal dopes are used in aircraft furnishing as the
Ans. First coat to prevent to rotting & are extremely applied thin to saturate the fabric.
12. Sags in A/C finishes
a. Too much coat applies
b. Low atmp. Humidity
13. Rivet Joint subjected to
a. Compressive load
b. Shear load
c. Tensile load
d. b & c
14. Toe in & Toe out related with
Ans. Wheel Alignment
15. Decreasing Angle of incidence from root to tip called
a. Washed In
b. Washed Out
16. In monocoque construction Longeron has cross bracing members which have longitudinal strip is called
a. Bulkhead
b. Stringer
c. Frames (Former)
d. a & c
17. Rivet Specing
Ans. Distance between center of rivet hole to other rivet hole.
18. Monocoque fuselage
a. Do not use former and stringer
b. Economic & good for low stress aircraft.
19. Diagram of split flap
20. Question about corrosion
a. Surface
b. Intergranular
c. …….
D. As in b & Fretting corrosion
21. When landing gear retracted which drag reduced
Ans. Parasite Drag
22. Fatigue Crack occurs during process of Al. Alloy
Ans. Improper heat treatment
23. Field Rivet
a. 2117 T b. 2024 T c. 2017 T
24. Flame used for welding Al. Alloy
A. Carburizing
B. Neutral
C. Oxidizing
25. Adequate protection of fabric depends upon
Ans. Thickness of dope film
26. Nose heavy tendency
Ans. CG forward of CP
27. Pitching increases
Ans. Longitudinal instability
28. Stall strip location
Ans. Inboard of wing & forward
29. Which procedure must be followed when defueling A/C with swept back wings?
a. Defuel all tanks at 1st time.
b. Defuel outboard wing tank 1st.
c. Defuel inboard wing tank 1st.
30. Hydrometer reading at tenmp. 22degree C, correction reading 28. Hydrometer reading 1.250.
a. 1.222 b. 12.22 c. 1.278
31. What type of selector valve is one of the most commonly usd in hydraulic syatem to ;provide for simultaneous flow of fluid into & out of connected actuating unit.
Ans. Four port closed center V/v
32. Stability about the axis which runs parallel to line of flight a. Lateral
b. Longitudinal
c. Dihedral
33. Aerodynamic balancing is done on control surface
a. Adding wt. at hinge line of trailing edge
b. Adding wt. aft hinge line of trailing edge.
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34. Balancing of control surface
a. Buffeting
b.
c. wt/strength ratio
35. Correct dihedral angle can be determined by
Ans. Using dihedral board & bubble level along the front spar of each wing
36. Purpose of stall strip Is
Ans. Stall inboard portion/ root area first
37. What is the purpose of compensating port or valve in brake master cylinder of independent brake system
a. Assist in master cylinder piston return.
b. Prevent fluid from flowing back to reservoir
c. Permit the fluid to flow forward or away from reservoir as temp. changes
38. Fuselage station
Ans. Body station.
39. Breakdown of air occurs by
a. Plain flap
b. Split flap
c. Fowler flap
40. Dutch roll definition
Ans. Coz of dihedral of wing.
41. Trim tab cable
a. 7x 19 b. 7x6 c. 7x7 d. 7x19 + extraflexible
42. If PDR reports that aeroplane will be heavy on controls then Ans. Cable rigged tightly.
43. The metring pin in oleo shock strur serves to
a. Lock the strut in down position
b. Retard the flow of oil as the struts are compressed
c. Meter the amount of air in strut.
44. Nose wheel landing gear is provided with centering cam which center the wheel while
Ans. Retraction
45. Cg placed to ahead
a. Nose wheel vibrates
b. Excessive load on nose wheel
c. all
46. Primary purpose of wheel balancing
Ans. Prevent heavy spots & reduce vibration.
47. Torque link
Ans. Correct wheel alignment
48. Autocollision light
a. Less than 40 & 100 min/cycle
b. Less than 45 & 120 min/ cycle
49. Navigation Light
a. Red left & right green & 140 Angle
b. 2 lights on wing 1 rear
c. White-rear d. all
50. Petroleum base hydraulic fluid is which colour
Ans. Dyed Red,.
51. Excessive wear at center
Ans. Overinflation
52. An A/C magnatic compass is swing to update the compass correction card when
a. Annual inspection accomplished on aircraft
b. The compass is serviced
c. Equipment is added that could effect compass deviation
d. All
53. Which instruments have range marking
a. ASI b. CHT c. Both d. Altimeter
54. What must be done to an instrument panel that is supported by shock mounts
Ans. Banding straps must be installed across the instrument mount as current path.
55. Which marking colour is used to indicate if a cover glass has slipped
Ans. White
56. What component of an autopilot system applies torque to control surface of an A/C
a. Servo b. Controller c. Gyro
57. Pitot tube
a. At longitudinal axis & far forward as possible
b. Where vibration exist
c. All
58. Static discharge damage
Ans. Its local burning & pitting along trailing edge of wing
59. What is the recommended procedure for cleaning the fuel tank before welding
a. Steam clean the tanlk interior
b. Purge tank with gas
c. Flush the inside of tank with clear N2O.
60. How does Temp. affect fuel weight?
a. Cold fuel heavier/ gallon.
b. Warm fuel is havier/ gallon
c. Temp has no effect.
61. To prevent vapour lock in fuel lines at high altitude some aircraft are equipped with
a. Vapour separator
b. Direct injection type carburetor
c. Booster pump
62. If a bladder type fuel tank is to be left empty for a extended period of time then the inside of tank should be coated with film of
a. Engine oil
b. Linseed oil
c. Fuel
63. Bonding
Ans. Bonding with aircraft structure.
64. What controls the inflation sequence into pneumatic deicer boots
a. Distributer V/v
b. Shutter V/v
c. Vaccum pump
65. What is the source of pressure for inflating deicer boots on reciprocating engine
a. Vane type pump
b. Piston type
c. Gear type
66. What method is usually employed to control the temp of an antiicing system using surface com b heaters
a. Thermo cyclic switch
b. Thermo states in the cockpit
c. Heater fuel shutoff v/v
67. Which of the following regulates the vaccum supplied by air pump to hold the deicing boots deflated when the pneumatic deicing system is off?
a. Distributer V/v
b. Pressure regulator
c. Suction relief valve
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68. Why should a chemical rain repellent not be used on dry windshield
a. It will eitch glass
b. Restrict visibility
c. Glass crazing
d. All
69. Trim tab uses
Ans. Cable drum
70. MTCS Ans. Altituded decreases & a/c moves forward.
71. Relief holes is provided at the intersection of center
Ans. No allow crack to propogate & to reduce stress concentration.
72. Hard landing can be detected by
a. Wrinkled wing
b. Bended strut
c. Leak near revealed seam
d. All.
73. Suction gauge is used in Ans Artificial Horizon
74. MTCS
a. Override stops are
b. Primary stops in cockpit only
. All.
75. Vortex generator prevents
Ans. Wing tip stalls
76. After brake bleeding, the serviceability is checked
a. Brake should be applied both sided equally
b. Operation check done while taxing
c. Wheel should rotate fully & freely when brake is not applied
d. All
77. Tapered bolt installed in Al panel is subjected to stress,hole is inlarged,stress occoures
Ans. Compression.
78. Composite material used on many secondary structure in flight control surface
Ans. Fiber Glass
79. Defect Shake in wood is long crake
Ans, Running between 2 Annular rings
80. MTCS Ans. Heavy portion of tyre.
81. Fail safe concept
Ans. In which failure of one member, another member assemble its load.
82. MTCS about propeller torque
a. Never follow engine torque
b. Always oppose engine torque
c. Propeller torque assist during windmilling
83. Dye penetrant used in
a. Ferrous
b. Non Ferrous
c. Non porous plastic
d. All
84. Doorsoles made of
Ans. Fiberglass & Bakelite
85. Wing loading definition
Ans. Dividing its total wing platform area into maxi. Allowable gross weight.
86. Forward force Ans antidrag wire
87. Blushing may be caused by
Ans. Temp. too low, humidity high, drafts over freely dopped surface, use of acetone as a thinner
88. Purpose of wing slat
Ans. Reduce stall speed at higher angle of attack
89. Which of the following provides manual maneuverability of aircraft while the autopilot is engaged?
a. Servo amplifier
b. Directional gyro
c. Flight controller
90. Stall warning system are designed to being warning the pilot when a stall
Ans. Is imminent
91. Arcing in an electrically heated windshield panel usually indicates a breakdown in
ans, conductive coating
92. fine cracks on aryclic sheet are
ans. crazing
93. painted band placed on cable adjacent to terminal is to denote
ans. slippage of cable into fitting
94. pilot report PDR a/c has tendency to yaw.
ans. offset the rudder fin
95. limiting factor of aspect ratio
ans. drag
96. when a/c load to more forward
a. it will load more forward on nose l/g
b. " " affect a/c stability
c. " " cause dangerous pic
d. all
97. static pressure is applied to.
ans. static leak test
98. mtcs about battries.
99. installation of battries. MTCS
a. prior to installation check done like proper venting etc.
b. when ni-cd battery used in place of ld-acid battery then firct chean acid with..
d all
100. purpose of debooster valve to
ans. release pressure & release brake.
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